Ments



J. W. COSGROVE.

MACHINE FOR INSERTING FASTENINGS.

APPLICATION FILED 061.13.1911.

1,312,519. 1 PatentedAug.12,1919.

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JOHN W. COSGROVE, 0F MEDFORD MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY,

A CORPORATION OF NEW JERSEY.

MACHINE FOR INSERTING FASTENINGS.

Specification of Letters Patent,

Application filed October 13, 1917. Serial No. 196,388.

To all whom it may concern.-

Be itknown that I, JOHN IV. Cosenovn, a citizen of, the United States, residing at Medford, in the county of Middlesex and State of Massachusetts, have invented certain'lmprovements in Machines for Inserting Fastenings, of which the following description, in connection with the accoma panying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for inserting' fastenings and is herein shown as embodied in' a machine for forming and in serting staples of the type-shown in the patent to Drey, No. 1,011,592, granted December 12, 1911;

In the operation of machines of this type, thelength or section of wire which is to be formedinto a staple is severed from the main body of wire by the operation of a cutter mounted on the end of the outside former, the inside former being lowered into operative position at the time when the section of wire which is to be formed into a staple is severed, and the outside former operating after the severance of the wire by a further advance to form the cut-off section of wire into a staple by bending it about the inside former, all as more fully explained in the patent above referred to.

It isessential to the effective operation of the formers and cutter in the severance of the section of wire and the forming of it into a staple that theedge of the cutter bear an exact relation to the wire-engaging surfaces at the leading end of the outside former, the edge of the cutter being arranged in substantial alinement with the surfaces of the outside former which engage the wire. If the edge of the cutter is positioned forward of such surfaces, the section of wire which is to be formed into a staple will be severed from the wire before it is engaged by the former and will be likely to be displaced relatively to the former, so that proper op eration of the outside and inside formers in bending the cut-off section of wire into a staple will be prevented. If, on the other hand, the edge of the cutter is positioned substantially back of the wire-engaging surfaces of the outside former, the former will engage and bend the section of wire which is to be formed into a staple before the wire will be severed by the cutter in consequence of which the staple will not be properly formed.

From the foregoing it will be understood that, if the cutter is materially shortened by successive grinding, and the edge of the cutter thereby displaced relatively to the wire engaging surfaces of the outside former, the machine will not operate effectively. The cutter cannot practically be adjusted in line with the former to compensate for the shortening of the cutter by grinding, since such adjustment of the cutter operates to move it away from the means for positioning its. edge relatively to the wire-engaging surfaces of the former and for taking the end thrust of the cutter in the severance of the wire. It has been found in practice also that if the cutter is sharpened before it has been too greatly dulled, and if care is exercised in grinding off only so much as is necessary to restore the cutting edge, that the cutter may be once reground without throwing its edge out of proper alinement with the outside former, but that the edge of the cutter cannot be reground more than once without disarranging the parts. Since the edge of a cutterissoon dulled, the expense of pro viding new cutters has heretofore been largo. An object of the invention is to provide in a machine for forming fastenings from a continuous strip or wire and inserting them, a carrier having mounted thereon a cutter for the wire formed with a cutting edge sub stantially longer than the cross-sectional dimension of the wire and adjustable relatively to the carrier to present an 'undulled portion of the edge of the cutter in operative relation to the strip when a preceding portion of the edge of the cutter has become blunted by use, to the end that the life of a cutter may be much prolonged and the expense of supplying cutters for the machine greatly lessened.

In order to prolong the life of the cutter still further, it is formed with a cutting edge at each end and co-acting parts are provided on the cutter and carrier constructed and arranged to position either end of the cutter properly with relation to the wire engaging surface or surfaces of the carrier retening strip.

gardless of the grinding down of the other end. 7 I

An important feature of the invention consists in the provision of stops on the carrier and cutter respectively having their engaging surfaces disposed substantially at right angles to the length of the cutter to take the endthrust of. the cutter in cutting the fastening strip or wire and operating to position the cutting edge of the cutter relatively to the strip-engaging surface of the carrier and to guide the cutter in its adjustment to bring an undulled portion of the edge of the cutter into operative relation with the fassevering means of the kind above set forth is utilized in connection with the outside former of a stapling machlne, and an 1mportant feature of the lnvention resides in mounting the wire severing means for movement relatlvely to the former to bring any one of the relatively operable cutting portions of the edge of the cutter into operative relation to the wire.

Other objects and features of the invention willappear as the description proceeds.

Although the invention is described as being embodied in amachine of the type shown in the patent to Drey, above cited, it is recognized that the invention in certain of its aspects is not restricted in its applicability to such a machine but can be used in other types of fastening inserting machines. The invention is, therefore, to be limited only by the scope of the appended claims.

In the drawings Figure 1 illustrates in plan view theparts of a stapling machine which form a staple and insert it into the work; and

Fig.2 is an enlarged view in perspective of the outside former with the cutter for wire mounted thereon.

As illustrated, the machine comprises staple forming mechanism and staple driving mechanism constructed and arranged to drive a staple through the upper and the channel lip of the sole of a lasted shoe. The staple forming mechanism showncomprises an outside former 2Varranged to slide in a guideway 4: formed in av plate 6 fixed on the head of the machine and held in position by inwardly turnedflanges on frame members 8 and 10. The outside former is constructed and arranged to embrace an inside former 12 held in a groove in the part 8 by any suitable 7 means. The outside former 2 is moved into cooperative relation to the inside former 12 to form the staple by means engaging the rack teeth 18 formed upon the rearend' of the outside former. The. groove 20 of the outside former 2 which. receives the inside former 12 is enlarged at its lower side so that it forms a guiding groove 22 (see Fig,

2) for the staple when it isbeing driven and also a guiding groove for the staple driver 24. Below the enlarged lower portion of the groove in the outside former, there is a. solid portion of the outside former which closes the groove and forms a support for the staple driver 24, this portion being extended at the front of the outside former to form a tongue 26. The staple driver 24 is T- shaped and is operated by, suitable means (not shown); The parts thus far described are all-disclosed in the patent to Drey, cited to which patent reference may be made for a complete description of parts not fully described herein. i p

The cutter 14c is of less width than the plane surface of the former 2 upon which it is mounted and means are provided for adjusting the cutter relatively to the former and to bring an undulled portion of the edge of the cutter into operative relation with the wire when another portion of the edge of the cutter has become blunted by use, as illustrated. Such means comprises a shoulder 28 on the former 2 and a shoulder 30 on the cutter 14, the co-a-cting surfaces of the shoul-. ders 28 and 80 being formed at substantially right angles to the length of the former and cutter, so that the end thrust of the cutter in severing the wire is taken up by said shoulders without the exertion of any, force tending to separate the cutter from the former. The shoulders 28 and 30 of the former 2 and cutter 14 operate also to position the cutting edge of the cutter relatively to the wire engaging surfaces of the former. The length of wire which is to be formed into a staple is engaged by the surfaces 31 of the former at the apex of the acute angle formed by the surfaces 31 and the upper. surface of the solid portion of the former, and theedge ofthe cutter 14: is preferably arranged-substantially in alinement with the lower or wire-engaging portions of the surfaces 311 of the former. v

Means'are provided'forsecuring the cut ter adjustably to the former, said means in the illustrated construction being in the form of screws 32 passing through elongated slots 34k in the cutter and threaded into the former at a point above the guiding groove 22 for the staple driver. By providing the threaded openings for the screws 32 at points in the former above the groove 22, the threaded ends of the screws 32 may be projected through the wall of the former in such manner as to extend slightly into the groove 20 of the former, in which position the screws 32 cause no damage since the upwardly extending part of the staple driver 24- does not completely fill the groove 20. By reason of the slots 34 of the cutter extending in 'a direction parallel to the shoulder 30 of the cutter as shown, the shoulders 28 and 30 operate to guide the cutter in its movements of adjustment, said adjustment being effected by loosening the screws 32 prior to the movement of the cutter and again tightening the screws subsequently to the movement of the cutter to maintain the cutter in its adjusted position.

The extent of adjustment of the cutter relatively to the carrier provided for in the illustrated (instruction will permit a considerable number of selectively operable cutting portions of the edge, of the cutter to be presented in operative relation to the wire since the wire commonly used in the machine in which the invention is herein illustrated as embodied is relatively fine, being commonly approximately of an inch in diameter in consequence of which a relatively small adjustment of the cutter will present a new portion of the cutting edge in operative position.

In order further to increase the life of the cutter 14, said cutter is provided with a cutting edge at each of its ends designated'36 and 38 respectively, there bein second h (V shoulder &0 formed on the cutter at a d1stance from the cutting edge 38 substantially equal to the distance from the shoulder 30 of the cutter to the cutting edge 36. l/Vhen, therefore, the cutting edge 36 is dulled at all points which by adjustment of the cutter can be brought into operative relation with the fwire, the cutter 14: may by the removal of screws 32, be disengaged from the former 2 and after reversal of its ends again attached to the former with the cutting edge 38 in opcrativerelation to the Wire, the shoulder 40 of the cutter being in this position of the parts in operative relation with the shoulder 28 of the former. It will be noted that by the means hereinbefore described the cutting edge 38 may be properly positioned relatively to the wire engaging surface of the former 2 regardless of the wearing or grinding down of the cutting edge 36 or vice versa.

For convenience and for the purpose of insuring immovability of the cutter relatively to the former the shoulder 28 is formed on a tongue or projection i2 extending from the former and of a width equal to the distance between the shoulders 30 and 40 of the cutter.

The term strip which appears in the claims is intended to have a broad significance applicable to a round filament or wire as well as to filaments of other forms.

Having fully described the invention, what I claim as new and desire to secure ly Letters Patent of the United States is:

1. In a machine for forming and inserting staples, a former having a surface to engage the strip from which the staples are formed, a cutter mounted on the former for adjustment transversely of the strip in contact with said strip engaging surface of the former, means on the former co-acting with said cutter to take the end thrust of the cutter in cutting the strip and to position the edge of the cutter properly in substantial alinement with the strip engaging surface of the former, and means for securing the cutter to the former in any one of a plurality of positions of adjustment in operative relation with the means on the former which receives the end thrust of the cutter and positions the edge of the cutter.

2. In a machine for forming and inserting staples, a former, a cutter mounted thereon, means on the former to guide the cutter during bodily movement thereof for adjustment to position an undulled portion of the cutting edge in operative relation to the strip from which the staples are formed, to receive the end thrust of the cutter in cutting the strip, and to position the edge of the cutter in proper position relatively to the leading end of the former, and means for securing the cutter in adjusted position.

3. In a machine of the class described, a former, means to guide wire in advance of the former, a cutter for the wire mounted on the former and of less width than the surface of the former upon which it is mounted and having an extended cutting edge substantially longer than the cross sectional dimension of the wire to be cut, said cutting edge comprising a plurality of wirecutting edge portions which can be brought into selectively operable positions by ad justment of the cutter across said surface of the former, and means for securing the cut ter to the former in position to bring any one of the selectively operable cutting portions of the edge of the cutter in operative relation to the wire.

4. In a machine for severing fastenings from a continuous strip and inserting them,

a carrier having a surface arranged to en thrust of the cutter in cutting the strip and to position properly the end of the cutter relatively to the strip engaging surface of the carrier, and means for securing the cutter to the carrier for lateral adj ustment of the cutter relatively to the carrier while maintaining the cutter in operativc relation with the means which receives the end-thrust of the cutter and positions its edge relatively to the strip-engaging surface of the carrier.

5. In a machine for severing 'fastenings from a continuous strip and inserting them,

a carrier having a strip engaging surface, means to guide the strip in advance of the carrier, 'a cutter mounted on the carrier and provided with a substantially straight'cutting edge in substantial alinement with the strip engaging surface of the carrier, and means for adjusting said cutter bodily along the strip engaging surface of said carrier to present an undulled portion of the edge of the cutter in operative relation to the strip when another portion of the edge of the cutter has become blunted from use.

6. In a machine of the class described, a carrier, wire serving means mounted on said carrier, and means for presenting successive portions of wire in a predetermined fixed position relatively to the wire severing means, said wire severing means having an extended cutting edge substantially longer than the cross-sectional dimension of the wire to be out and said wire cutting means and its carrier being constructed and arranged for relative movement in parallel planes to bring selectively operable portions of the wire cutting edge in operative position to present an undulled portion of said edge in operative relation to the wire when a preceding portion of that edge has become blunted from use.

7. In a machine for forming and inserting staples, a former, means to guide the strip from which the staples are formed in advance of the former, a cutter for the strip mounted on the former, a part on the former shaped to take the end thrust of the cutter in cutting the strip, and a part between the ends of the cutter interfitting with said firstmentioned part.

8. In a machine for forming and inserting staples, a former, means to guide the strip from which the staples are formed in advance of the former, a double-edged cutter for the strip mounted on the former, means for securing the cutter to the former, and co -acting parts on the former and cutter constructed and arranged to position Copies of this patent may be obtained for positioning eitheredge of the cutter with relation to the leading end of the former independently of the other edge to enable the operative edge of the cutter to be po s1t1oned properly regardless of the grinding down of theother end ofthe cutter.

10. In a machine for severing fastenings" from a continuous strip and inserting them, a carrier, means to guide the strip from which the fastenings are'severed in advance of the carrier, a double-edged cutter for the scrip mounted on the carrier, meansfor sccuring the cutter to the carrier, and co-act-. ing parts on the carrier and cutter constructed and arranged to position properly either end of the cutter with relation to the leading end of the carrier regardless of the grinding down of the other end of the cutter.

.11. In a machine for forming and inserting-staples, a former, a double-edged cutter mounted thereon, stops on the cutter equidistant from the ends of the cutter, and a stop on the former cooperating with the stops on the cutter and operable to position properly either of the cutting edges of the cutter relatively to the advancing end of the former.

12. In a machine for forming and inserting staples, a former, a double-edged cutter mounted thereon, one of said parts having a tongue projecting therefrom and the other of said parts having a groove formed therein to receive said tongue to position either edge of the cutter relatively to the advancing end of the former independently of the other edge.

13. In a machine for forming and insert ing staples, a former, a double-edged cutter mounted thereon having a groove formed therein, a tongue on the former arranged to be received in said groove and to guide said cutter upon adjustment of the cutter relatively to the former, and means for securing the cutter adjustably on-the former.

In testimony whereof I have signed my name to this specification.

JOHN W. oosenovn.

for five cents each, by addressing the Commissioner of Batents,

Washington, D; (1.? 

